Tiger Woods, chasing Rory McIlroy for golf's world No. 1 ranking, scrambled to a 69 on Thursday that left him four shots off the first-round lead of Justin Rose at Bay Hill.
Woods can overtake Northern Ireland's McIlroy atop the world rankings with a successful defence of his Bay Hill title. McIlroy isn't playing the event.
The 14-time major champion got off to an erratic start, hitting just eight fairways and 12 greens and needing 28 putts in a three-under-par first round of the $6.2 million US PGA Arnold Palmer Invitational.